Majaranta, P., MacKenzie, I. S., & Räihä, K.-J. (Abstract). Using motion to guide the focus of gaze during eye typing 12th European Conference on Eye Movements (ECEM12), Dundee, Scotland, August 2003.
Eye typing provides means of communication for people with severe disabilities. Eye typing research extends over twenty years; however, there is little research on the design issues (Majaranta & Räihä, 2002). Recent research indicates that the type of feedback impacts typing speed, error rate, and the user's need to switch her gaze between the on-screen keyboard and the typed text field (Majaranta et al., in press).
Prior research in human-computer interfaces uses motion to control the user's attention (Ware, 2000, p.160). We study a method to help the user concentrate on the center of a key: the symbol on the key shrinks during fixation. Shrinking not only provides feedback on the dwell time progress but also draws the attention in, thus helping the user concentrate on the center of the key. As well, guiding the user's gaze to the center of the key mitigates a common calibration problem (drifting) with eye trackers. We present the results of an experiment studying the effect of shrinking symbols on eye typing.
Majaranta, P. and Räihä, K-J. (2002), Twenty Years of Eye Typing: Systems and Design Issues. In Proceedings of ETRA 2002, New Orleans, LA, ACM Press.
Majaranta, P., MacKenzie, I. S., Aula, A., & Räihä, K.-J. (in press). Auditory and visual feedback during eye typing. To appear in Extended Abstracts of CHI 2003. New York: ACM.
Ware, C. (2000) Information Visualization: Perception for Design. Morgan Kaufman.